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1. Copernicus Marine Service Ocean State Report, Issue 5

Author

Karina von Schuckmann, Pierre-Yves Le Traon, Neville Smith, Ananda Pascual, Samuel Djavidnia, Jean-Pierre Gattuso, Marilaure Grégoire, Signe Aaboe, Victor Alari, Brittany E. Alexander, Andrés Alonso-Martirena, Ali Aydogdu, Joel Azzopardi, Marco Bajo, Francesco Barbariol, Mirna Batistić, Arno Behrens, Sana Ben Ismail, Alvise Benetazzo, Isabella Bitetto, Mireno Borghini, Laura Bray, Arthur Capet, Roberto Carlucci, Sourav Chatterjee, Jacopo Chiggiato, Stefania Ciliberti, Giulia Cipriano, Emanuela Clementi, Paul Cochrane, Gianpiero Cossarini, Lorenzo D'Andrea, Silvio Davison, Emily Down, Aldo Drago, Jean-Noël Druon, Georg Engelhard, Ivan Federico, Rade Garić, Adam Gauci, Riccardo Gerin, Gerhard Geyer, Rianne Giesen, Simon Good, Richard Graham, Eric Greiner, Kjell Gundersen, Pierre Hélaouët, Stefan Hendricks, Johanna J. Heymans, Jason Holt, Marijana Hure, Mélanie Juza, Dimitris Kassis, Paula Kellett, Maaike Knol-Kauffman, Panagiotis Kountouris, Marilii Kõuts, Priidik Lagemaa, Thomas Lavergne, Jean-François Legeais, Simone Libralato, Vidar S. Lien, Leonardo Lima, Sigrid Lind, Ye Liu, Diego Macías, Ilja Maljutenko, Antoine Mangin, Aarne Männik, Veselka Marinova, Riccardo Martellucci, Francesco Masnadi, Elena Mauri, Michael Mayer, Milena Menna, Catherine Meulders, Jane S. Møgster, Maeva Monier, Kjell Arne Mork, Malte Müller, Jan Even Øie Nilsen, Giulio Notarstefano, José L. Oviedo, Cyril Palerme, Andreas Palialexis, Diego Panzeri, Silvia Pardo, Elisaveta Peneva, Paolo Pezzutto, Annunziata Pirro, Trevor Platt, Pierre-Marie Poulain, Laura Prieto, Stefano Querin, Lasse Rabenstein, Roshin P. Raj, Urmas Raudsepp, Marco Reale, Richard Renshaw, Antonio Ricchi, Robert Ricker, Sander Rikka, Javier Ruiz, Tommaso Russo, Jorge Sanchez, Rosalia Santoleri, Shubha Sathyendranath, Giuseppe Scarcella, Katrin Schroeder, Stefania Sparnocchia, Maria Teresa Spedicato, Emil Stanev, Joanna Staneva, Alexandra Stocker, Ad Stoffelen, Anna Teruzzi, Bryony Townhill, Rivo Uiboupin, Nadejda Valcheva, Luc Vandenbulcke, Håvard Vindenes, Nedo Vrgoč, Sarah Wakelin, Walter Zupa, Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), European Commission, Centre National de la Recherche Scientifique (France), University of Tokyo, European Space Agency, Pirro, Annunziata, Institut du Développement Durable et des Relations Internationales (IDDRI), and Institut d'Études Politiques [IEP] - Paris

Subjects
0106 biological sciences, Service (business), [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, 010504 meteorology & atmospheric sciences, 010604 marine biology & hydrobiology, media_common.quotation_subject, [SDE.MCG]Environmental Sciences/Global Changes, Library science, Oceanography, 01 natural sciences, [SDE.ES]Environmental Sciences/Environmental and Society, State (polity), 13. Climate action, salinity distribution changes, zooplankton community, secondary production, demersal fish, trawl surveys, Political science, 14. Life underwater, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, ComputingMilieux_MISCELLANEOUS, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, 0105 earth and related environmental sciences, media_common, Copernicus
Abstract

Issue sup1: Copernicus Marine Service Ocean State Report, Issue 5 Supplement.-- Karina von Schuckmann (Editor), Pierre-Yves Le Traon (Editor), Neville Smith (Chair) (Review Editor), Ananda Pascual (Review Editor), Samuel Djavidnia (Review Editor), Jean-Pierre Gattuso (Review Editor), Marilaure Grégoire (Review Editor), The work was supported by the Copernicus Marine Environment Monitoring Service (CMEMS) LATEMAR project. CMEMS is implemented by Mercator Ocean in the framework of a delegation agreement with the European Union. This work has also been conducted as part of the bilateral project EOLO-1 (“Extreme Oceanic waves during tropical, tropical-like, and bomb cyclones”) between CNR-ISMAR and the University of Tokyo (Japan; Prof. Takuji Waseda). Antonio Ricchi funding have been provided via the PON “AIM” - Attraction and international mobility program AIM1858058. Joanna Staneva acknowledges H2020 IMMERSE Project, Arno Behrens was supported by CMEMS Waveflow project and G. Gayer by ESA Black Sea and Danube Regional Initiative (EO4BS).

Published
2021

2. A data set of sea surface stereo images to resolve space-time wave fields

Author

Pedro Guimarães, Jean-François Filipot, Jae-Seol Shim, Fabrice Ardhuin, Filippo Bergamasco, Alvise Benetazzo, Fabien Leckler, V. A. Dulov, Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Istituto di Scienze Marine [Venezia] (ISMAR-CNR), Istituto di Science Marine (ISMAR ), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)-National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), and Consiglio Nazionale delle Ricerche (CNR)-Consiglio Nazionale delle Ricerche (CNR)

Subjects
Statistics and Probability, Ocean observations, Data Descriptor, 010504 meteorology & atmospheric sciences, Settore GEO/12 - Oceanografia e Fisica dell'Atmosfera, open data, Context (language use), Library and Information Sciences, 01 natural sciences, Education, 3D wave fields, Space physics, Fluid dynamics, 14. Life underwater, Rogue wave, lcsh:Science, Physics::Atmospheric and Oceanic Physics, 0105 earth and related environmental sciences, Remote sensing, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], 010505 oceanography, Physical oceanography, Space time, Elevation, Breaking wave, extreme waves, Stereo vision, Computer Science Applications, Ocean surface topography, Stereo imaging, lcsh:Q, Statistics, Probability and Uncertainty, Settore ING-INF/05 - Sistemi di Elaborazione delle Informazioni, Geology, Information Systems
Abstract

Stereo imaging of the sea surface elevation provides unique field data to investigate the geometry and dynamics of oceanic waves. Typically, this technique allows retrieving the 4-D ocean topography (3-D space + time) at high frequency (up to 15–20 Hz) over a sea surface region of area ~104 m2. Stereo data fill the existing wide gap between sea surface elevation time-measurements, like the local observation provided by wave-buoys, and large-scale ocean observations by satellites. The analysis of stereo images provides a direct measurement of the wavefield without the need of any linear-wave theory assumption, so it is particularly interesting to investigate the nonlinearities of the surface, wave-current interaction, rogue waves, wave breaking, air-sea interaction, and potentially other processes not explored yet. In this context, this open dataset aims to provide, for the first time, valuable stereo measurements collected in different seas and wave conditions to invite the ocean-wave scientific community to continue exploring these data and to contribute to a better understanding of the nature of the sea surface dynamics., Measurement(s)stereo image • wave height • peak wave period • wave directionTechnology Type(s)Camera Device • computational modeling techniqueFactor Type(s)geographic locationSample Characteristic - Environmentsea surface layerSample Characteristic - LocationBlack Sea • Adriatic Sea • Yellow Sea • Iroise Sea Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.12181158

Published
2020

3. A surface kinematics buoy (SKIB) for wave–current interaction studies

Author

Pierre Ferrant, Mickael Accensi, Pedro Veras Guimarães, Jim Thomson, Peter Sutherland, Yves Perignon, Fabrice Ardhuin, Michel Hamon, Alvise Benetazzo, Institut Français de Recherche pour l'Exploitation de la Mer - Brest (IFREMER Centre de Bretagne), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), Applied Physics Laboratory [Seattle] (APL-UW), University of Washington [Seattle], Istituto di Scienze Marine [Venezia] (ISMAR-CNR), Istituto di Science Marine (ISMAR ), Consiglio Nazionale delle Ricerche (CNR)-Consiglio Nazionale delle Ricerche (CNR), and Perignon, Yves

Subjects
lcsh:GE1-350, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, 010504 meteorology & atmospheric sciences, Buoy, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, 010505 oceanography, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, lcsh:Geography. Anthropology. Recreation, [SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment, Kinematics, Accelerometer, 01 natural sciences, Acceleration, lcsh:G, GNSS applications, Surface wave, Hull, 14. Life underwater, DISSIPATION, BREAKING, Wave–current interaction, lcsh:Environmental sciences, Geology, 0105 earth and related environmental sciences, Marine engineering
Abstract

Global navigation satellite systems (GNSSs) and modern motion-sensor packages allow the measurement of ocean surface waves with low-cost drifters. Drifting along or across current gradients provides unique measurements of wave–current interactions. In this study, we investigate the response of several combinations of GNSS receiver, motion-sensor package and hull design in order to define a prototype “surface kinematics buoy” (SKIB) that is particularly optimized for measuring wave–current interactions, including relatively short wave components that are important for air–sea interactions and remote-sensing applications. The comparison with existing Datawell Directional Waverider and Surface Wave Instrument Float with Tracking (SWIFT) buoys, as well as stereo-video imagery, demonstrates the performance of SKIB. The use of low-cost accelerometers and a spherical ribbed and skirted hull design provides acceptable heave spectra E(f) from 0.09 to 1 Hz with an acceleration noise level (2πf)4E(f) close to 0.023 m2 s−3. Velocity estimates from GNSS receivers yield a mean direction and directional spread. Using a low-power acquisition board allows autonomous deployments over several months with data transmitted by satellite. The capability to measure current-induced wave variations is illustrated with data acquired in a macro-tidal coastal environment.

Published
2018

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